Watthour Meters for all your submetering needs!

Overview
Davidge Controls makes a variety of watthour meters for submetering. Most are used by landlords to charge their tenants for the power they use. The meters do not fit in the meter sockets used by most utility companies. They mount next to a breaker panel or disconnect box and the current is sensed by transformers installed over the existing wiring.

Meter Selection and Online Store
Click the Meter Selection Wizard button above to customize a meter to your exact needs, then proceed to the online store to purchase it.

Meter Names
We sell to lot of building owners who are not familiar with standard electrical terms. The resulting confusion prompted us to name all our meters. We named them after our national parks and each named product designates a different electrical system or function. Click on the green titles below to open a data sheet for that meter.

Yosemite Watt Hour Meter — 120/240 volts
Three-wire, 110-120 volts to neutral, 220-240 volts line to line. Ninety percent of the watthour meters we sell are Yosemites. This is the standard electric meter for homes, apartments, offices, and yachts.

Sequoia Watt Hour Meter — Single 120 volts
Two-wire, 120 volts to neutral electric meter. Normally used to monitor a single circuit or a small boat in a marina.

Denali Watt Hour Meter — Dual 120 volts
This is two Sequoia electric meters in one box. Saves you a lot of money if you can use it. Usually used in marinas where two small boats share the same power pedestal.
Denali Watt Hour Meter Printable PDF

Olympic Watt Hour Meter
A combination of the Yosemite and the Sequoia watthour meters. Useful if you need separate measurements of 120 volt and 240 volt loads. Also used in place of Yellowstone in automatic reading systems where you want the power used by each phase.

Yellowstone Watt Hour Meter - 3 phase wye, 120/208 volts
Four-wire, three phase wye, 110-120 volts to neutral, 208-240 volts line to line. Normally used for air conditioners and other big motors. If your building has this type of power, you should use this meter even if you only have 120 volt loads in the office you want to meter.

Zion Watt Hour Meter — 3 Wire, 3 phase delta, 208 volts
Three-wire, three phase delta, 208-240 volts line to line. Use this only if you have a balanced load. If a neutral is present in the panel, you will get a more accurate reading with a Yellowstone or Gettysburg meter if the load is out of balance.

Gettysburg Watt Hour Meter - 4 Wire, 3 phase delta, 120/208 volts
Four-wire, three phase delta, 110-120 volts to neutral on two legs, 208-240 volts to neutral on the third (wild or stinger) leg, 208-240 volts line to line.

Biscayne Watt Hour Meter — 220 Volts to Neutral
Two-wire, 200-250 volts line to line, no neutral. Normally used for appliances when a neutral is not present. If there are any loads connected to neutral or ground, you will not get an accurate reading.

Glacier Watt Hour Meter — 240 Volts Line to Line
Two-wire, 200-250 volts to neutral. The standard electric meter for Europe, Asia, Africa, and parts of South America.

Lassen Watt Hour Meter - 3 phase wye, 277/480 volts
Four-wire, three phase wye, 240-280 volts to neutral, 440-480 volts line to line electric meter. You can also use it with only one or two of the hot legs connected (for lights, heaters, small motors).

Shenandoah Watt Hour Meter - 3 phase delta, 277/480 volts
Four-wire, three phase delta, 240-280 volts line to neutral on two legs, 440-480 volts on the third leg, 440-480 volts line to line. Sorry, we don't make a three-wire, 480V delta.

Everglades Watt Hour Meter - Bi-directional Meter
An experimental bi-directional meter intended for use with solar or wind-powered net metering systems. The power flowing in one direction is displayed on one counter and the power flowing in the other direction is displayed on a second counter. Works OK with one current transformer, but not with two or three.

Meter Enclosures

The EZ Meter was originally designed to be mounted in power pedestals on the docks at recreational boat marinas and was originally sold without enclosures. We now offer a growing line of enclosures for both indoor and outdoor use. Any of the meters above can be installed in these enclosures.

Counter Mounting Plate

The stainless steel mounting plate makes it easy to install the counter in an enclosure you provide. Just drill an inch and a half hole in the cover, snap the counter in the plate, put the counter through the hole, and drill four holes for #6 screws or pop rivets.

NEMA1 Enclosure

The NEMA1 enclosure is a triple-wide switch box with a custom made cover that holds the display counter and the meter. There is no room inside for current transformers. It is only available with the unsealed counters. It is available with a standard switch box and with a box with a mounting bracket.

Single Meter NEMA4X Enclosure

The 6" x 6" x 4" plastic enclosure holds one meter and a counter on a custom panel insert with room for current transformers behind. A more common installation has the enclosure mounted near a breaker panel with the CTs in that panel. The enclosures are available in interior and exterior versions with the difference being resistance to UV light. This enclosure can also be special ordered with cutouts for two displays for mounting a Denali, Olympic or Everglades meter or a second meter on the back of the panel.

Multiple Meter NEMA4X Enclosure

The 19.5" x 14.5" x 8" enclosure holds up to 12 meters on one panel or 24 meters on two panels. Like the smaller NEMA4X enclosure, it is available with clear or opaque covers and interior and exterior versions. Click here for a description of the different panel layouts. Each panel is custom made for each job and takes about two weeks for us to receive. Call for a quote on price and delivery.