Specifications

Furnish and install the Power-Style Commercial Multi-Metering equipment as specified and shown on the associated electrical drawings. The equipment is furnished by Schneider Electric and meets UL requirements. The equipment is furnished with a UL service entrance label when applicable.

The commercial multi-metering equipment is totally enclosed, dead front construction, freestanding, front and rear aligned. Accessibility is from the front. The equipment is NEMA Type 1 or NEMA Type 3R, non-walk-in, rainproof construction. The framework is steel, secured together to support all cover plates, bussing, and component devices during shipment and installation. Formed removable closure plates are used on the front, rear, and sides. All covers have utility sealing provisions where required by the utility.

All painted parts are pre-treated and provided with a corrosion-resistant, UL Recognized acrylic baked paint finish. The paint color is ANSI 49 medium light gray.

NEMA Type 3R enclosures are treated with the same process, except all exterior parts are of painted, galvannealed steel. All exterior hardware on NEMA Type 3R enclosures is zinc-plated steel.

The entire multi-metering equipment is suitable for operation at the specified available fault current. The equipment is labeled to indicate the maximum available fault current rating, taking into account the structure, bussing, main disconnects, and tenant main disconnects.

The maximum allowable current any device may let through when used in series with self-contained meter sockets is 30,000 A. Multi-metering tenant main disconnects are fully rated.

The multi-metering equipment through bus is tin-plated aluminum or silver-plated copper. The bussing is of sufficient cross-sectional area to meet UL Standard 891 for temperature rise. There are provisions for future splicing of additional sections from either end. The neutral bus is 100 percent rated. The ground bus is sized per UL Standard 891, and of the same material as the through bus.

The utility metering compartments are arranged in hot sequence. The metering compartment is barriered and covers have sealing provisions. The metering compartments meet Electric Utility Service Equipment Requirements Committee (EUSERC) requirements.

The tenant main disconnects are circuit breaker or fusible pullout devices. Equipment ground fault is provided when required per the NEC, or when requested by the customer for large tenant mains (LTMs). Top exit of loadside cables is provided through use of a built-in front accessible vertical wireway for small tenant meter sections.

Meter sockets are rated 200 A continuous duty and are 5-jaw or 7-jaw construction. The meter socket has provisions for a test block that meets EUSERC requirements.

Circuit Breakers

Circuit breakers are common trip for simultaneous opening of all poles. Breakers have an over-center, trip-free, toggle-type operating mechanism with quick-make, quick-break action and positive handle indication. Circuit breakers are UL Listed in accordance with UL Standard 489 and are rated for the maximum voltage specified and with continuous current ratings as noted on the plans. The circuit breakers are thermal magnetic or current limiting.

Fusible Pullouts

Fusible pullouts are UL Listed and rated 240 V or 600 V with a 200 A maximum rating. The pullout uses a Class T fuse. When the pullout head is removed, the fuses remain with the pullout head. The 240 V pullout uses 300 V Class T fuses. The 600 V pullout uses 600 V Class T fuses.

The multi-metering equipment is separated into shipping blocks. Each shipping block is capable of being handled with the use of removable lifting bars or rollers and be clearly labeled with proper handling procedures.