Terminals listed for more than one wire must be identified for this purpose in the equipment instructions or on the terminal.īe sure to match wire size and terminal ratings. Terminal actions.įollow the one-wire-per-terminal rule. Fortunately, these tools come with instructions that tell you how to get the right reading every time. There are several ways to damage a torque wrench, from storing it with the spring compressed to failing to exercise the spring, both of which can yield meaningless readings. If you have the device but not the torque value, contact the manufacturer. Contrary to a popular myth, contact resistance rises dramatically with over-torque. Generic torque tables do not account for all the variables that affect developing a torque value for a connection. To get good connections, follow the manufacturer's torque specifications, which are often included with the equipment instructions. Terminals must ensure good connections without damaging the conductors. Terminals and splicing devices suitable for both copper and aluminum must be marked as CU/AL or CO/ALR. All aluminum conductors require wire-brushing immediately prior to assembly.Ĭopper and aluminum conductors must not make contact with each other in a terminal or splicing device not specifically listed and identified for the purpose. Split-bolt lugs listed for aluminum-to-aluminum come with detailed instructions that vary among lug designs. Terminals listed for aluminum typically have an antioxidant to reduce aluminum oxide, which reduces the conductor/terminal contact resistance. Terminals and splicing devices suitable only for aluminum must be marked AL. In 404.14(C) and 406.2(C), the Code requires you to use terminals and splicing devices identified for use with the conductor material. If it states “Suitable for 18-2 AWG,” you can use either solid or stranded conductors with the terminating device. If it states “Suitable for 18-2 AWG Solid,” you can use only solid conductors with it. For example, if the labeling on a terminal device states “Suitable for 18-2 AWG Stranded,” you can use only stranded conductors with that device. The Code requires you to follow manufacturer's instructions when installing electrical equipment (110.3), and this applies to terminal devices. These are readily available for RV or automotive use.They may seem like just the finishing touches, but splices and terminations are critical components of any electrical system. So I would be thrilled to hear that the cable actually goes from the switch to a low voltage power supply in the 12-24V range, which then powers 12-24V LED lights at the pole. Right?īecause these defects would not be of concern if this circuit were less than 30 volts and less than 55 watts. This would be a hot mess if it were mains wiring. Rigid conduit requires only 6".ĭirect burial splices are not allowed except with certain splice kits designed specifically for that. ![]() But that is not a standard and has no force of lawĬopper is not a legal conduit wiring method, so it is irrelevant and it counts as direct burial.ĭirect burial requires 24" burial depth. Several vendors are choosing to use white for NM 14, yellow for NM 12, orange for NM 10 and gray for UF of any size. UF is rated for all three.įor direct burial rating, what matters is the lettering on the cable, not the color. It is not rated for outdoor, wet locations nor direct burial. What you call "Romex" is actually NM cable.
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