a metal device box has four 12 AWG conductors, two internal clamps, and a duplex receptacle. Total voume ? Device boxsize ?

In general, the letter-type designation R formerly referred to a thermoset insulation. a. rhodium b. rubidium C. d. rayon rubber -based covering and now indicates

Conductors of dissimilar metals shall not be intermixed in a terminal or splicing connector.Please explain me why.

If the NEC provides a requirement to grounding equipment, it generally implies that there will be a direct connection to Earth of connection through a/an A. Equipment grounding conductor B. Bonding conductor C. Grounding electrode conductor D. Equipotential bonding conductor

Type MC Cable shall be secured at intervals not exceeding A. 3ft B. 4ft C. 6ft D. 8ft

1-Calculate the minimum and maximum protection for an A/C , its conductors(75 ºC) and its grounding. For the following values:1- FLC compressor = 30 A2- FLC condenser = 3 A

Three 10 AWG, type THW conductors are to be installed between poles on individual insulators. What will the conductor ampacity be?

How is the grounded dc conductor of a photovoltaic system required to be identified? a. shall be identified at the time of installation by distintive red markings on some of the terminations b. shall be identified at the time of installation by distintive blue marking at all terminations c. shall be identified at the time of installation by a distintive grouping of wires AWG #2 d. shall be identified at the time of installation by distinctive white marking at all terminations.