Question

What is the code requirement for receptacles connected to circuits of different voltages and installed in one building?

Answer 1

This National Electrical Code (NEC) defines some least quantity of electrical crates provided for a some building varieties, especially staying house parts. Most electrical codes define the maximum range among containers within a room, so a lamp either device by a regular length cable is usually located wherever round the room boundary without mistreatment an expansion cord.

Codes further define the number of receptacles(containers) by area additionally the highest variety like containers through a circuit, to restrict overloading cables among extreme progress of current. The NEC and model building codes normally define that no larger than 645 sq. cm (100 sq. in.) of electrical crates are frequently placed in per nine.3 sq. meters (100 sq. ft) of wall exterior.
An electrical container is described through the NEC as “a contact equipment connected through the terminal for the connection of a individual addition connection.” Here involves ordinary wall sockets and larger, extra difficult devices. Both are recognized as convenience container sockets, container plugs, or convenience plugs.
Containers connected at a regular 15-A or 20-A section circuit need signify of the grounding kind. Containers
attached on various voltages, frequencies, or current models (fluctuating vs. direct current, AC vs. DC) at that likewise assumptions should be polarized. Containers do normally 20-A, 125V, yet denote accessible from 10 A to 400 A, also of 125V to 600V. Locking, explosion-proof, tamper-proof, and ornamental fashion containers do ready. Any units, like alter containers, are created to particular methods. Split-wired containers should one plug that's continuously energized, including a second controlled by a wall switch. Those are seldom utilized for a lamp, with the switch near the entry to the room.
Containers are generally positioned among 30 and 46 cm (12–18 in.) on ceiling of the polished floor. In stores, labs, and several areas with tables upon walls, both are installed at 107 cm (42 in.) over that ground. Containers over room counters are mounted 122 cm (4 ft) on roof of the finished floor. In accessible areas, the Americans by Disabilities Act Accessibility guidelines (ADAAG) needs a least 38 cm (15 in.) height for retailers, with plugs over kitchen shelves at 107 cm (42 in.) beyond the floor. anywhere work areas are expected to do available, as in public library carrels and office workstations, the containers ought to be located beyond the work surface whenever possible, or alternatively below the first fringe of the work surface. this needs thoughtful preparation