The surge protection device spd is a component of the electrical installation protection system. Box after wiring is completed using drywall anchors.
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Spd device wiring diagram. Locate the spd as close as possible to the circuit being surge limited to minimize the wire length and optimize spd performance. There are three different types of surge protective devices. Type 2 spd installed at sub distribution boards combined type 1 2 spds are available and are usually installed in consumer units. Warrants to the original customer that the spd products shall be free from defects in materials and workmanship for a period of five 5. Type 3 spd installed close to the protected load. Midnite solar inc.
Make sure to grommet the hole in the distribution box. You must refer to this diagram while wiring the spd. Self inductance of wiring is proportional both to its length and to the logarithm of its thickness. Spd performance is a function of the connecting lead length. 5 surge protective device for integrated units effective november 2013 figure 6. Select the correct wiring diagram for the spd you are install ing.
Wiring single phase units 230 l figure 8. Type 1 spd installed at the origin eg. Midnite solar surge protection device spd midnite solar inc. To reduce the impedance. Wiring 3 phase delta units figure 7. This device is connected in parallel on the power supply circuit of the loads that it has to protect see fig.
J17it can also be used at all levels of the power supply network. Page 6 eaton spd series instruction manual im01005019e rev. Device spd install spds on the load side of the main overcurrent protection to comply with nec article 285 for type 2 spd. Halving the length of connecting wires halves the inductance but the thickness would have to be increased tenfold to achieve the same effect. Avoid long wire runs so that the device will perform as intended.
Gallery of Spd Device Wiring Diagram
